Brand:Allen Bradley PLC Item No.:Allen Bradley 1764-LRP Product Origin:USA Product Dimensions:138 × 87 × 57 mm Product Weight:0.38 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Allen Bradley 1764-LRP is an enhanced MicroLogix 1500 processor module designed for industrial automation applications requiring higher memory capacity, flexible communication options, and reliable real-time control performance. As one of the most capable processors in the MicroLogix 1500 family, it delivers stable execution for machine control, process automation, and legacy system integration.
Built for demanding industrial environments, the 1764-LRP combines expanded user memory with dual serial communication capability, making it suitable for SCADA integration, multi-device communication, and data-intensive control tasks. Despite being discontinued, it remains widely used in installed base systems across manufacturing and infrastructure industries due to its proven reliability and long lifecycle support.
Technical Specifications
Specification Item
Details
Manufacturer
Allen Bradley (Rockwell Automation)
Model Number
1764-LRP
Product Type
MicroLogix 1500 Enhanced Processor Unit
Series
MicroLogix 1500
User Memory
14 KB total (approx. 10 KB program + 4 KB data)
Processing Speed
~1 ms per 1K logic execution
Communication Ports
Dual RS-232
Supported Protocols
DF1, DH-485, Modbus, ASCII
Compatible Base Units
1764-24AWA, 1764-24BWA, 1764-28BXB
I/O Expansion Capacity
Up to 512 I/O points
Data Logging
Time/event-triggered support
Programming Software
RSLogix 500
Power Consumption
Low power bus operation (~1.9 W heat dissipation)
Operating Temperature
0°C to 55°C
Storage Temperature
-40°C to 85°C
Mounting Type
DIN rail / panel mount (via base system)
Dimensions
Approx. 138 × 87 × 57 mm
Weight
Approx. 0.28–0.38 kg
Recommended Related Models
Related Model
Function
1764-24BWA
MicroLogix 1500 Base Unit
1764-28BXB
High-density base unit with mixed I/O
1764-LSP
Standard MicroLogix 1500 processor
1764-MM1
Memory module expansion
1764-RTC
Real-time clock module
1769-IF4
Analog input expansion module
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Industrial Applications
The 1764-LRP is widely used in legacy and mid-complexity industrial automation systems where reliable control and serial communication remain essential.
Typical applications include:
OEM machine control systems
Packaging and labeling equipment
Conveyor and material handling systems
Pump and compressor automation
Water and wastewater treatment control
HVAC and building automation systems
Data logging and process monitoring
Retrofit upgrades for legacy PLC systems
Its dual serial ports make it especially useful in systems that require simultaneous PLC-to-HMI and PLC-to-SCADA communication.
Key Advantages
Expanded Memory for Complex Logic
Compared with standard MicroLogix processors, the 1764-LRP offers higher memory capacity, supporting more complex programs and data handling.
Dual Serial Communication Flexibility
Two RS-232 ports enable simultaneous communication with multiple devices such as HMIs, SCADA systems, or remote terminals.
Strong Legacy System Compatibility
It integrates seamlessly with MicroLogix 1500 base units, making it ideal for maintaining long-life industrial installations.
Reliable Industrial Performance
Designed for continuous operation in harsh environments, ensuring stable execution of control logic and communication tasks.
Data Logging Capability
Supports time-based and event-based data logging, improving process tracking and system diagnostics.
Technical FAQs
1. What is the 1764-LRP used for?
It is a MicroLogix 1500 enhanced processor used for industrial automation and machine control applications requiring higher memory and communication flexibility.
2. Is the 1764-LRP a complete PLC?
No. It is a processor module and must be used with a compatible MicroLogix 1500 base unit.
3. What makes the LRP different from LSP?
The LRP provides higher memory capacity and dual RS-232 communication ports compared to the LSP variant.
4. What communication protocols does it support?
It supports DF1, DH-485, Modbus, and ASCII protocols.
5. Can it connect to SCADA systems?
Yes. It supports serial communication commonly used for SCADA integration.
6. What programming software is used?
It is programmed using RSLogix 500 software.
7. Is it suitable for high-speed control applications?
It is suitable for standard industrial control but not for modern high-speed motion systems.
8. Is the 1764-LRP still in production?
No. It has been discontinued but remains widely used in existing installed systems.
9. What industries still use it today?
Manufacturing, utilities, OEM machinery, and legacy industrial automation facilities.
10. Why is the 1764-LRP still widely used?
Because many industrial plants still rely on MicroLogix 1500 systems, and the LRP provides stable performance, higher memory, and flexible communication in long-life installations.
